نتایج جستجو برای: bergs

تعداد نتایج: 31  

2005
Ted Scambos Olga Sergienko Aitbala Sargent Douglas MacAyeal Jim Fastook

[1] ICESat elevation profiles of tabular iceberg margins and the Ronne Ice Shelf edge reveal shapes indicative of two types of bending forces. Icebergs and shelf fronts in sea-ice-covered areas have broad ( 1000 m wide), rounded, 0.6 m high ‘berms’ and outer edges that slope down several meters toward the water. Bergs in warmer water have 2 to 5m ‘ramparts’ with 1500 m wide edge-parallel ‘moats...

1991
Robert A. Bindschadler David H. Bromwich

The ocean's influence upon and response to Antarctic ice sheet changes is considered in relation to sea level rise over recent and future decades. Assuming present-day ice fronts are in approximate equilibrium, a preliminary budget for the ice sheet is estimated from accumulation vs. iceberg calving and the basal melting that occurs beneath floating ice shelves. Iceberg calving is derived from ...

2007
David K A Barnes Stefanie Kaiser

There is strong evidence that polar ice-caps are, in places, rapidly melting. This is both in response to emergence from the last ice age but also current unprecedented rises in atmospheric carbon dioxide. Melting and the regional warming underlying it, are highly complex and influences on life is debated. In the Arctic and the Antarctic Peninsula the number of glaciers retreating and retreat r...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Yan Liu John C Moore Xiao Cheng Rupert M Gladstone Jeremy N Bassis Hongxing Liu Jiahong Wen Fengming Hui

Iceberg calving from all Antarctic ice shelves has never been directly measured, despite playing a crucial role in ice sheet mass balance. Rapid changes to iceberg calving naturally arise from the sporadic detachment of large tabular bergs but can also be triggered by climate forcing. Here we provide a direct empirical estimate of mass loss due to iceberg calving and melting from Antarctic ice ...

2015
Elisabeth Wiken Telenius Knut Engedal Astrid Bergland

BACKGROUND Dementia is among the leading causes of functional loss and disability in older adults. Research has demonstrated that nursing home patients without dementia can improve their function in activities of daily living, strength, balance and mental well being by physical exercise. The evidence on effect of physical exercise among nursing home patients with dementia is scarce and ambiguou...

Journal: :The Cryosphere 2022

Abstract. Ice shelves play a key role in the dynamics of marine ice sheets by buttressing grounded and limiting rates flux to oceans. In response recent climatic oceanic change, fringing West Antarctic Sheet (WAIS) have begun fragment retreat, with major implications for ice-sheet stability. Here, we focus on Thwaites Eastern Shelf (TEIS), remaining pinned floating extension Glacier. We show th...

1998
J. T. Andrews T. A. Cooper A. E. Jennings H. Erlenkeuser

HU93030-007 LCF (65o01.390N and 30o14.810W) is a 4.5 m long, giant (11 cm diameter) piston core from 1800 m water depth on the continental slope, south of the Denmark Strait sill. The core sampled acoustically stratified sediments at a site below the Kangerlussuaq Trough. Nine AMS C dates on planktic foraminifera indicate that the core spans 3⁄414 to 28 C ka. The sediments consists of two princ...

2017
Gillian Asplin Gunnel Carlsson Lena Zidén Gunilla Kjellby-Wendt

BACKGROUND Studies have shown that patients with hip fracture treated in a Comprehensive Geriatric Care (CGC) unit report better results in comparison to orthopaedic care. Furthermore, involving patients in their healthcare by encouraging patient participation can result in better quality of care and improved outcomes. To our knowledge no study has been performed comparing rehabilitation progra...

Journal: :Emerging Infectious Diseases 2008
Polyxeni Potter

he true north strong and choked with ice, " wrote Canadian poet Al Purdy, about the Arctic (1). " The sea ... was like the concentrated essence of all the blue that ever was; I could feel that blue seep into me and all my innards change colour. And the icebergs! They were shim-mery lace and white brocade, and they became my standard for the word beauty " (2). Purdy's thrill at drifting with " t...

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